I have an IBM T41 laptop. My laptop does not have a serial port (that I know of) It does, however, have a LPT1 parallel port for Printer though. Can I use a 25pin Serial cord and connect it to the receiver to do the update? Also, if I can do the update this way(using the printer port), which Com port do I specify in the AVR300 software ? (Com1, 2, 3, or 4) ? If I can't physically perform the scenario above..I would need to buy a USB-serial port adapter, and select which COM port?....Thanks in advance.